Concrete roof construction



G. A. HURST.

CONCRETE ROOF CONSTRUCTION.

APPLICATION FILED MAR. 9. I920- Patented July 13, 1920.

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NNNNNN OR G. A. HURST.

CONCRETE ROOF CONSTRUCTION.

AP P L C A T l O N F l L E D M A R 9 I 9 2 0- 1,346,752. Patented July 13, 1920.

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llljf I III L.- I 61/1. Hll/FSZ INVENTOR W 5 I ATTORNEY UNITED STATES GEORGE ABSOLUM HURST, OE LOUISVILLE, KENTUCKY.

CONCRETE 'ROOE CONSTRUCTION.

Application filed March 9,

To all whom it may concern: I

Be it known that I, GEORGE A. HURST, a citizen of the United States, residing at Louisville, in the county of Jefferson and State of Kentucky, have invented new and useful Improvements in Concrete Roof Constructions, of which the following is a specification. X p

This invention relates to building construction, particularly to roofs, and has for its object the provision of a roof structure including a supporting wire mesh secured upon the roof rafters and upon which cement is poured, it being of course understood that suitable forms must be employed until the cement is set, but an important feature being that the necessity for permanent sheathing is eliminated.

An important object is the provision of a roof construction of this character in which the reinforcing wire mesh is secured to therafters by suitable staples which are covered by metal shells preventing the concrete from engaging the wire mesh and the staples holding it at their points of connection thereby permitting proper expansion and contraction of the reinforcing wire under the influence of heat and cold.

Another object is the provision of a roof construction of this character which will be seamless and which should be highly durable and free from necessity of repairing, also fireproof, and not likely to be damaged by hail storms.

\Vith the above and other objects and advantages in view, the invention consists in the details of construction to be hereinafter more fully described and claimed, and illustrated in the accompanying drawings in which I Figure 1 is a perspective view showing a portion Of a roof constructed in accordance with my invention, portions being in section to show different types of ridges,

Fig. 2 is a sectional view through the roof rafters and showing the forms for supportin the cement,

Fig. 3 is a plan view with the wire screen in position, 7

Fig. 4 is a detail view showing the securing staple inclosing members,

Fig. 5 is a detail sectional view at right angles to Fig. 4, also showing the securing staples and their inclosing shells, and

Fig. 6 is a detail. sectional view through Specification of Letters Patent.

Patented July 13, 1920.

Serial No. 364,434.

a portion of the roof with the forms removed.

Referring more'particularly to the drawings, Fig. 1 shows a roof including two gables, a valley, and a chimney. The gable A is shown as having a round ridge B and the gable C is shown as having a roll ridge D which may, if desired, be provided with an ornamental iron structure E. The letter F designates the valley in which is located a tin lining G. The roof shown at A is plain and troweled smooth without any attempt at ornamentation while the roof shown at C is marked off in squares to give the appearance of shingles which, of course are painted with the alternate courses of I different colors or in any other suitable arrangement whereby to produce an ornamental eifect. The purpose of this figure is to illustrate the possibilities in my cement roof construction.

In carrying out my invention I avoid the use of the sheathing ordinarily used and which adds so much to the expense of roofing. Instead of using sheathing I employ a sheet 10 of wire mesh which is stretched over the rafters H and which is secured thereto by staples 11 which are arranged to engage alternate strands of the wire screen. Disposed over each staple 11 is a metal shell 12 which is formed simply of a small sheet of metal bent into U-shape to conformingly engage over the staple and having its ends mashed together, as shown at 13. The purpose of these shells is to prevent the cement from coming in Contact with the wire at its junctures with the staples. In carrying out my process it is of course necessary that I make use of suitable forms which are shown as including strips or cleats 14 nailed upon opposite sides of the rafters and carrying boards 15 spaced from the reinforcing wire. When the forms are set up and the wire screen secured upon the rafters and the shells disposed Over the staples the cement is poured so as to entirely embed the wire screen and the shells. After the cement, is set it is of course apparent that the forms may be removed.

The above described method is that used in constructing a new roof. When it is desired to repair or recover an old roof it is obvious that forms are not needed as the wire is placed directly upon the old roof and the cement poured thereonto.

From the foregoing description and a study of the drawings it will beapparent that I have thus provided a roof construction employing concrete or cement instead of sheathing, the concrete being reinforced by wire screen embedded thereinso as to produce a strong and durable structure. .It is also apparent that the roof will be seamless and be consequently practically everlasting in nature.

\Vhile I have shown and described the preferred embodimentof my invention, it is of course to be understood that I reserve the right to make such changes in the form, construction, andcarrangement of parts as will not depart from the spirit of the inven tion or the scope of the subjoined claims.

Having thus described my invention, I claim: I

1. A roof structure comprising rafters, a wire screen stretched over said rafters in spaced relation thereto, staples engaging the screen and driven into the rafters, hollow metal shells disposed over the staples and engaging against the rafters, and a sheet of concrete poured onto and embedding the screen and the hollow shells.

2. In a roof construction comprising a sheet of wire screen stretched over rafters and secured thereto by staples driven into the rafters, the wire screen being embedded within a sheet of concrete, means for preventing contact of the cement with the staples at their juncture with the wire screen comprising a hollow shell disposed over each staple and engaging the associated rafter.

3. In a roof construction comprising a sheet of wire screen stretched over rafters and secured thereto by staples driven into the'rafters, the wire screen being embedded within a sheet of concrete, means for preventing contact of the cement with the staples at their juncture with the wire screen comprising a hollow shell disposed over each staple and engaging the associated rafter, each shell being formed from a piece of sheet metal of U-form for conforming engagement upon the staple and having its ends closed whereby to prevent concrete,

when poured, from entering said shell In testimony whereof I aflix my signature.

Ins GEORGE ABSOLUM HURST.

7 mark lvltness to mark: 7

FRANK J. SoHUsrER. 

